The complex behaviour of a fuselage-cavity system in a modern propeller aircraft has been analysed with the finite element method. In the analysis the interaction between the fluid and the structure has been taken into account in a physical coupling formulation. The results obtained show that, at some frequencies, this coupling is very important for the vibroacoustic system response. The eigenfrequencies and eigenmodes of the fuselage-cavity found in the analysis are compared with experimental modal analysis on a mock-up of the aircraft. The agreement is very good from 10-130 Hz. Especially the modes with strong coupling are well pronounced in the experiments.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Finite element calculations of the interior noise of the Saab 340 aircraft


    Additional title:

    Finite Elemente Berechnung der Geraeusche im Inneren des Flugzeugs Saab 340


    Contributors:

    Published in:

    SAE-Papers ; Apr ; 1-16


    Publication date :

    1989


    Size :

    16 Seiten, 15 Bilder, 2 Tabellen, 4 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Interior noise control of the Saab 340 aircraft

    Halvorsen, W.G. / Emborg, U. | Tema Archive | 1989


    Interior Noise Control of the Saab 340 Aircraft

    Emborg, Urban / Halvorsen, William G. | SAE Technical Papers | 1989


    Component maintenance on Saab aircraft

    Emerald Group Publishing | 2001


    Aircraft 39-45: Saab 21A

    Online Contents | 1997